ACS Applied Electronic Materials
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2026
·
IF 4.7
Sitian Li,Xingyu Yu,Wenxuan Lin,Hongyue Wang,Wei Deng,Chengzhen Luo,Xiutong Liu,Jie Zhao
Long-term deployment of memristor-based image enhancement in wearable or implantable brain–computer interfaces (BCIs) remains challenging due to the stringent requirements for device reliability and stability. Here, we leverage the long-term dynamic physical characteristics of memristors to achieve offline image enhancement for BCI applications. Highly crystalline and uniform-sized CsPbBr3 quantum dots are synthesized via a modified thermal injection method and integrated into an ITO/PQDs/Ag memristor. The device exhibits a voltage-dependent resistive switching: a pristine low-resistance state at 0.5 V without hysteresis transitions to stable bipolar switching at 1 V, attributed to the in-situ formation of an interfacial AgBrx layer, with the switching governed by the synergistic interplay of Ag+ filament dynamics and Br– interfacial accumulation. From the device stability and cycling data, two physical parameters, namely, low-resistance state stability and transition agility, are extracted and mapped to sharpening and contrast intensity factors in image enhancement algorithms, respectively. This method effectively improves the detail clarity and contrast of blurred images, as evaluated by a convolutional neural network, where recognition accuracy improves by 16.8% compared to original blurred images. This work simplifies the complex parameter tuning associated with traditional enhancement algorithms, offering a pathway for integrating memristor-based image preprocessing into wearable and implantable BCI systems.
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Foods
·
2026
·Vol. 15
·期 16
·2772
·
IF 6
Guanru Yi,Shaoyu Lv,Longwei Fu,Zhixiang Xu,Shiyong Wang,Longhua Xu
Enrofloxacin residues in foods pose potential risks to food safety and public health, creating demand for rapid, sensitive, and matrix-compatible screening methods. All-inorganic CsPbBr3quantum dots (QDs) are promising fluorescent probes because of their strong photoluminescence, but their poor stability in polar media greatly restricts their practical use in food analysis. Herein, ZIF-8-confined and APTES-passivated CsPbBr3QDs were developed as an ethanol-compatible fluorescent sensor for enrofloxacin detection in foods. Unlike reported CsPbBr3@ZIF-8 systems mainly used for metal-ion sensing in aqueous media, this work integrates ZIF-8-confined in-situ growth with APTES-assisted silane passivation to improve the stability and applicability of CsPbBr3QDs in ethanol-based food extracts. ZIF-8 provided a confined microenvironment, while the APTES-derived silane layer further enhanced fluorescence stability. The sensor exhibited a distinct turn-off fluorescence response toward enrofloxacin, with a linear range of 0.1–25.0 mg·L−1and a limit of detection of 0.058 mg·L−1, mainly attributed to electron transfer with CsPbBr3@ZIF-8. The method was successfully applied to honey, milk, fish, and shrimp samples, achieving recoveries of 85.2–106.8%. Results obtained for aquatic products showed no significant difference from HPLC analysis (p> 0.05), demonstrating the potential of this sensor for rapid enrofloxacin residue screening in complex food matrices.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yiting He,Xiayu Zhu,Ajun Li,Shuyuan Lin,Bo Li,Songbin Liu,Wei Wang,Chuanli Wu,XinYu Ye
CsPbBr 3 perovskite quantum dots (PQDs) possess exceptional optoelectronic properties, such as tunable bandgap and narrow emission linewidth, which underscore their significant potential for optoelectronic devices. However, their practical application is substantially hindered by surface defects, notably uncoordinated Pb 2+ ions, which result in low photoluminescence quantum yield (PLQY) and poor environmental stability. Non-fullerene small molecules have been proven to enhance the efficiency and stability of solar cells. In this work, the non-fullerene molecule BTP-4F was introduced into CsPbBr 3 PQDs, and the mechanism by which BTP-4F influences the stability of QDs under different irradiation conditions was thoroughly investigated. The findings reveal that BTP-4F effectively passivates surface defects by coordinating with undercoordinated Pb 2+ ions, thereby suppressing non-radiative recombination and improving the optical performance of the PQDs. Notably, the BTP-4F significantly inhibits photo-induced degradation and lattice distortion under both ultraviolet and red-light irradiation, presenting a synergistic optimization of PL and stability of the PQDs. The optimized QDs were successfully applied in high-color-rendering light-emitting diodes (LEDs), demonstrating their practical potential. These results provide experimental support for employing BTP-series molecules in PQD-based devices, particularly solar cells and light-emitting diodes. This advances the goal of unlocking the full potential of PQDs and integrating them into diverse optoelectronic applications.
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Materials Chemistry Frontiers
·
2026
·
IF 8.1
Hongkai Li,Yuchi Zhang,Le Han,Changshuai Gong,Yan Xu
Blue-emitting CsPbBr3 perovskite quantum dots (PQDs) typically face challenges such as low photoluminescence quantum yield (PLQY) and poor spectral stability, hindering their optoelectronic applications. Here, a feasible strategy was developed to encapsulate CsPbBr3 PQDs within the supercages of three-dimensional (3D) MCM-22 zeolite via structural transformation from its two-dimensional (2D) layered precursor (MCM-22P). The CsBr and PbBr2 were thoroughly mixed with high-surfacearea MCM-22P nanosheets. Upon high-temperature treatment, MCM-22P condenses into a 3D framework with nanoscale interlayer spaces effectively suppress CsPbBr3 PQDs aggregation, enabling uniform confinement of ultrafine CsPbBr3 PQDs (2.13 nm) with stable blue emission at 467 nm and a maximum PLQY of 45.31%. A white-light-emitting diode (WLED) device with CIE color coordinates (0.31, 0.30) was constructed by combining CsPbBr3@MCM-22-6h (blue), CsPbBr3@MCM-22-0.5h (green), and KSF:Mn4+ phosphors (red) on a 365 nm chip. This work offers a very simple strategy for developing bright and deep blue-emitting CsPbBr3 PQDs for advanced optoelectronic applications.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xinhao Cai,Shaojun Wang,Anjun Huang,Yingzhu Zi,Yan Mu,Yuhuan Li,Yue Liu,Yangke Cun,Farhod Shokir,Zhiguo Song,Jianbei Qiu,Daqin Chen,Zhengwen Yang
A high-fluorine doping strategy is proposed to improve the optical properties of CsPbBr 3 -containing glass. • A minimum FWHM of 19 nm is achieved, which is narrower than those of most reported CsPbBr 3 -containing glass systems. • AlF 3 incorporation enables modulation of the glass network and passivation of halide vacancies. • The application of the reported CsPbBr 3 -containing PQD glass in backlit displays is demonstrated. Narrow-band emission is essential for wide-color-gamut display applications; however, the emission bandwidth of perovskite quantum dots typically broadens upon embedding into glass matrices. Herein, we report a high‑fluorine-doping strategy to regulate crystallization behavior and optical performance of CsPbBr 3 -containing quantum dot glass toward high-performance backlit displays. High-concentration AlF 3 incorporation into borosilicate glass enables fluorine to modulate the glass network and passivate halide vacancies, thereby regulating CsPbBr 3 nanocrystal precipitation and suppressing defect-related trap states. As a result, the emission linewidth is narrowed from 24 to 19 nm, which is narrower than that of most reported CsPbBr 3 -containing glass systems. In addition, fluorine incorporation induces partial glass network depolymerization, promotes decrease in PQD size distribution, resulting in the observed spectral narrowing and redshift. The CsPbBr 3 -containing PQD glass exhibits good ultraviolet irradiation resistance, thermal reversibility up to 493 K, and strong exciton binding, demonstrating exceptional optical robustness. By modulating halide composition, full-visible-spectrum tunability from blue to green and red is achieved. This work provides a strategy for constructing spectrally pure and robust perovskite quantum dot glass, opening new opportunities for wide-color-gamut display applications. Download: Download high-res image (132KB) Download: Download full-size image
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BIOSENSORS & BIOELECTRONICS
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2026
·
IF 11.8
Jihua Wei,Jiahui Wang,Runze Wu,Jiayi Zhang,Haozhen Ren,Qianli Tang,Longjian Huang,Kai Zhang,Xianjiu Liao
Sensitive and reliable detection of DNA repair enzymes is critical for early cancer diagnosis and therapeutic monitoring. Herein, we report a novel electrochemiluminescence (ECL) biosensor for ultrasensitive detection of Flap Endonuclease 1 (FEN1), integrating an aptakiss-assisted CRISPR/Cas13a signal amplification strategy with a perovskite-based nanocomposite sensing interface. Specifically, a hybrid nanomaterial composed of CsPbBr 3 nanocrystals coated with polydopamine (PDA) and decorated with gold nanoparticles (AuNPs) was constructed to form a core–shell–satellite structure (CsPbBr 3 @PDA@AuNPs). The PDA coating enhanced the aqueous stability of CsPbBr 3 and introduced functional groups for probe attachment, while the AuNPs facilitated electron transfer and signal amplification. Upon recognition and cleavage of a flap-structured DNA substrate by FEN1, a downstream transcription reaction was initiated to generate RNA triggers, which in turn activated the Cas13a system. Cas13a cleaved a surface-tethered RNA strand required for forming the aptakiss complex, thereby removing ferrocene-based ECL quenching and restoring strong luminescence. The proposed biosensor exhibited an excellent detection limit of 1.73 fM, with high selectivity against non-specific nucleases, and demonstrated remarkable reproducibility and long-term stability. This study not only presents a powerful biosensing platform for FEN1 but also highlights the potential of CsPbBr 3 @PDA@AuNPs as a versatile ECL-active material. The modular design and tunable functionality of the nanocomposite enable broad applicability in detecting various biomolecules, paving the way for the development of advanced perovskite-based ECL biosensors for clinical and environmental diagnostics.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 11
·839
·
IF 3.2
Wang Suting,Meng Xiangbin,Zhang Bowen,Cheng Fei,Xing Kunpeng,Bala Hari
The electron transport layer (ETL) is critical in hole-transport-layer-free all-inorganic perovskite solar cells (PSCs). Although ZnO as an ETL exhibits high electron mobility and suitable energy levels, its high surface defect density often leads to interfacial recombination losses. In this study, PbCl 2 was incorporated into the ZnO ETL to passivate interfacial defects and optimize the energy level alignment. PSCs with a structure of FTO/PbCl 2 –ZnO/CsPbBr 3 /Carbon were fabricated. The resulting carbon-based CsPbBr 3 solar cells achieved a power conversion efficiency (PCE) of 7.0%, representing a 40% improvement over devices based on the pristine ZnO ETL. Furthermore, the unencapsulated devices retained 95% of their initial PCE after 60 days of storage under ambient conditions.
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Small
·
2026
·
IF 11.8
Chun Sun,Jiabao Bai,Ruifeng Wang,Zhengtao Qiu,Jiazhi Cui,Yuxin Zhang,Zekang Zang,Dan Huang,William W. Yu
Metal halide perovskites are promising photocatalysts for solar hydrogen production but suffer from severe water instability. Herein, a dual organic-inorganic encapsulation strategy is developed to construct water-resistant CsPbBr 3 nanocrystals. Hydrophobic zwitterionic ligands, in combination with an epitaxial CsPb 2 Br 5 shell, effectively isolate the CsPbBr 3 core from water while maintaining structural integrity. To overcome the carrier-blocking effect induced by encapsulation, hollow CoS x is introduced to form a sandwich-like heterostructure, in which CsPbBr 3 is spatially confined between CoS x and CsPb 2 Br 5 . This architecture enables directional charge transfer via a Schottky CoS x /CsPbBr 3 interface for efficient electron extraction and a type-II CsPbBr 3 @CsPb 2 Br 5 heterojunction for hole transport. Benefiting from the synergistic stabilization and charge-management effects, the resulting photocatalyst achieves a hydrogen evolution rate of 5.36 mmol h −1 g −1 with an apparent quantum efficiency of 4.19% at 420 nm, while maintaining stable performance over five cycles. This work provides a general strategy for integrating multi-layer encapsulation with carrier-selective interfaces to realize durable and efficient perovskite photocatalysts for aqueous hydrogen evolution.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Junbei Hu,Xianjie Wang,Lei Lin,Jie Xu,Mengting Liu,Ran Wang,Xiaofeng Li,Lingling Tao,Yu Sui,Bo Song
CsPbBr3, an inorganic halide perovskite, has attracted great interest in recent years due to its excellent photoelectric properties. In this paper, we report a high-performance position-sensitive detector and laser communication sensor based on a CsPbBr3/4H-SiC heterojunction that effectively exploits the lateral photovoltaic (LPV) effect. The X-ray diffraction, X-ray photoelectron spectra, and photoluminescence data indicate that a high-quality CsPbBr3 film has been successfully obtained using pulsed laser deposition. The thickness of the CsPbBr3 film is shown to play a key role in the open-circuit voltage and linear LPV. A large position sensitivity (up to 827 mV/mm) of the LPV with a fast relaxation time is observed. Moreover, the shortest relaxation time of only 0.34 μs for 532 nm laser irradiation among counterparts is achieved in the detector under consideration. Furthermore, the position sensitivity and relaxation time of the LPV in the CsPbBr3/4H-SiC heterojunction show a weak dependence on the laser wavelength from 266 to 532 nm. The robust characteristics of fast relaxation time and high position sensitivity of the LPV make the CsPbBr3 junction a promising candidate for both laser communication sensors and self-powered high-performance position-sensitive detectors.
研究领域:
光电子学
·
光伏技术
·
半导体器件
·
材料科学
·
激光技术
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OPTICAL MATERIALS
·
2020
·
IF 2.779
Yi Zhao,Chenyang Shen,Ling Ding,Jianping Liu,Weidong Xiang,Xiaojuan Liang
Cd 2+ doped CsPbBr 3 perovskite quantum dots were synthesized in borosilicate glass for the first time by traditional melting method. By X-Ray Diffraction (XRD) and high resolution electron microscopy analysis, it was proved that Cd 2+ successfully entered the perovskite lattice structure. The samples have good optical properties , high photostability, chemical stability, thermal stability and water stability. On this basis, CsPb 0.7 Cd 0.3 Br 3 QDs glass, commercial red phosphor (CaAlSiN 3 :Eu 2+ ) and blue light chip were coupled to produce white LED devices. This discovery opens up a new way for the application of metal ion-doped perovskite QDs glass in optoelectronic devices.
研究领域:
光电子器件
·
材料科学
·
纳米技术
·
光子学
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ACS Applied Nano Materials
·
2022
·
IF 6.14
Ying Li,Rong Song,Jiaming Liu,Jun Qian,Xin Wang
Inorganic perovskites show excellent advantages over traditional quantum dots (QDs) and have great potential for application in light-emitting devices, display devices, and other fields. In this paper, CsPbBr3/Cs4PbBr6 QDs with different cesium-to-lead ratios are synthesized in one step at room temperature and in a simple environment without protective measures. Among them, the perovskite powder with a photoluminescence quantum yield (PLQY) of 54% and a series of ink additives are formulated into a perovskite fluorescent ink with high stability and printability. The inks are used not only for printing but also for writing with simple and convenient application conditions in mass production. Finally, the inks are used to combine ZnS:Cu flexible alternative current electroluminescent (ACEL) devices to produce two different structures of light conversion flexible ACEL devices in a full-printing manner. The material loss and cost of the devices are very low. Pattern drawing and printing can be performed selectively. Among them, the P-outside structure ACEL device has a high lumen efficiency of 77.43 lm/W, which shows the application potential of the ink in ACEL devices and promotes the process of perovskite materials from laboratory to industrial applications.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Zexuan Sui,Yan Sun,Yue Jing,Ci Wang,Yao Zhu,Sen Qian,Jing Ren,Jianzhong Zhang
We report the first study on in-situ co-growth of biphasic CsPbBr 3 and Zn-Cd-S quantum dots (QDs) in borosilicate glass , and provide explicitly evidence of their morphology and nanoscale distribution. Such biphasic QDs co-doped nano-glass composites show unique green and red dual-band emissions. By changing the thermal heating scheme, the fluorescence intensity ratio (FIR) and thus the apparent color can be widely adjusted. The FIR can be also fine-tuned simply by varying the excitation wavelength. Based on the FIR, a self-calibrated X-rays dosimeter is constructed, which also possesses a good thermal stability. Although the X-rays induced scintillation weakening occurs, it can be readily recovered by post-thermal-annealing.
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